/********************************************************************
	filename: 	Const.h
	created:	2010/04/16
	author:		Xiuwei Chen
	
	purpose:	define const parameters

	All right Reserved
*********************************************************************/

#pragma once

#include <cstdio>
#include <utility>
#include <cmath>
#include <algorithm>

#ifdef _GEOMETRY_DLLEXPORT
#define GEOMETRY_EXPORT __declspec(dllexport)
#else
#define  GEOMETRY_EXPORT __declspec(dllimport)
#endif

/// <Summary>
/// NULL definition
/// </Summary>
#define NULL 0


/// <Summary>
/// Error Precision
/// </Summary>
GEOMETRY_EXPORT extern double EP;

/// <Summary>
/// PI
/// </Summary>
GEOMETRY_EXPORT extern const double PI;